A man walks 30 m to the west, then 5 m to the east in 45 seconds. a. What is his displacement? (1 point)

b. What was his total distance walked? (1 point)

c. What is his average velocity? (1 point)

d. What is his average speed? (1 point)

It is really hard for me right know

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

Which of the following forces require physical contact? tension air resistance friction magnetic force applied force